Orbit diagram of Xanthus as of March 2013
| |
| Discovery | |
|---|---|
| Discovered by | Henry Holt and Norman G. Thomas |
| Discovery site | Palomar Observatory |
| Discovery date | 31 March 1989 |
| Designations | |
| (4544) Xanthus | |
| Pronunciation | /ˈzænθəs/[1] |
| 1989 FB | |
| Near-Earth object Apollo | |
| Orbital characteristics[2] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 7629 days (20.89 yr) |
| Aphelion | 1.3023 AU (194.82 Gm) |
| Perihelion | 0.78120 AU (116.866 Gm) |
| 1.0418 AU (155.85 Gm) | |
| Eccentricity | 0.25012 |
| 1.06 yr (388.38 d) | |
| 269.26925° | |
| 0° 55m 36.923s / day | |
| Inclination | 14.146° |
| 24.00998° | |
| 333.75° | |
| Earth MOID | 0.173705 AU (25.9859 Gm) |
| Physical characteristics | |
| Dimensions | 1.3 km |
| 0.65 km | |
| 37.65 h (1.569 d) | |
| 17.1 | |
4544 Xanthus /ˈzænθəs/, provisional designation 1989 FB, is an asteroid, classified as near-Earth object of the Apollo group, approximately 1.3 kilometers in diameter. It was discovered on 31 March 1989, by astronomers Henry Holt and Norman Thomas at the Palomar Observatory in California.[2]
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